Pina Colada Glass

A Pina Colada Glass or Poco Grande Glass is a big flute bowled highball glass that is similar to the hurricane glass but is shallower than it and has a longer stem.
Each Poco Grande Glass holds about 12 fluid oz of liquid, much less than the 20 fl oz a Hurricane Glass can hold. These are exotic glasses and like Hurricane glasses, are typically used in classic theme parties or tropical parties of unrestrained fun.

Hurricane glass

A Hurricane glass is a glass tumbler which contains 20 US Fluid ounces (590 ml). It is a cocktail glass, and is named after the cocktail Hurricane created at Pat O'Brien's Bar in New Orleans. It is shaped like a vase or a hurricane lamp and wider than a highball glass.

For a good explanation on which glass to use for which drink. Read this post from Bottleneck Management.

Martini Glass

Cocktail Glass

A Cocktail Glass is a stemmed glass with an inverted cone bowl used to serve straight up cocktails. Altough the term Cocktail Glass is used interchangeably with Martini Glass, they differ slightly. a Martini Glass is purely conical while a Cocktail Glass is more rounded in shape and the Martini Glass is wider at the mouth and has a taller stem.

The martini glass has somewhat fallen out of favour in modern times due to its tendency to spill drinks, and the champagne coupe is sometimes used instead.

Simple Guide to Cocktail Glassware

When there is no specific glass suggested for a cocktail, it's up to you to chose a glass.
Either you just go ahead and serve using any glass available to you following these simple rules
A. Go for Tall or Collins Glasses, Highball Glasses or even Hurricane Glasses for cocktails with loads of non-alcoholic mixes, and those that require crushed or cubed ices,
B. But if your cocktail is aromatic and liqueur based, and has a complex character that must reach the nose use a wide mouthed Cocktail Glass.
C. Red Wine Glasses for cocktails that have a Red Wine as the base spirit. Red Wine Glasses have a wider mouth and a long stem, so that the wine can be swirled an aerated to release the aroma while the long stem keeps the fingers away and avoid quick warming of the wine.
D. White Wine Glasses for cocktails with a White Wine base, since White Wines must not be aerated as much as a Red Wines, since they oxidise fast when in contact with air, White Wine glassware, in contrast to the wide mouthed bowl of a Red Wine Glassware, is narrow with a narrow mouth. A White Wine has much lighter and delicate notes and the narrow mouth and less surface area in contact with air helps retain the aroma.
E. If your cocktail is based on a Sparkling Wine like Champagne then a Flute Glass is more suitable since a Sparkling Wine is a White Wine with a secondary fermentation that produces the bubbles, and the narrow mouth flute prevents the bubbles from escaping.
F. If it's winter and you are in the mood for some hot cocktails like the Irish Coffee or Hot Toddy, go for the Irish Coffee Glass, it has a heat resistant glass and a handle.
G. Martini Glasses for Martinis or "Tinis" in general, but since these glasses have fallen off of favour these days, a Cocktail Glass will be good too.
H. IF you are serving Margaritas, don't look for Margarita Glass if you don't have one at home, Double Old Fashioned Glass or other glasses are more common these days, for serving Margaritas.
I. If you are the adventurous one, and are serving shots or shooters, of course the Shot Glass is your choice of glass,
J. Finally, if you are going all out and serving depth charges and car bomb shots, all you need is a Double Old Fashioned Glass or a Beer Mug for the beer and a shot glass to drop the bomb in.